Thanks everyone so far, I've got a form that will open as part of a macro
and it does everything I want it to do but I want a show to run unattended
and when a certain slide appears, the form is displayed without any user
action. When the slide's time is up, the form disappears and the show
continues. I want this to occur each time, the particular slide appears.
I've written an add-in with an auto open sub-routine and it appears in the
available list but it doesn't do what I want.  Any help appreciated.

Thanks again